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209 lines
8.1 KiB
C
209 lines
8.1 KiB
C
/** @file
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The data hub protocol is used both by agents wishing to log
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data and those wishing to be made aware of all information that
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has been logged.
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This protocol is defined in Framework for EFI Data Hub Specification.
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Version 0.9.
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Copyright (c) 2007 - 2009, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef __DATA_HUB_H__
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#define __DATA_HUB_H__
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#include <PiDxe.h>
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#define EFI_DATA_HUB_PROTOCOL_GUID \
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{ \
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0xae80d021, 0x618e, 0x11d4, {0xbc, 0xd7, 0x0, 0x80, 0xc7, 0x3c, 0x88, 0x81 } \
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}
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//
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// EFI generic Data Hub Header
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//
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// A Data Record is an EFI_DATA_RECORD_HEADER followed by RecordSize bytes of
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// data. The format of the data is defined by the DataRecordGuid.
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//
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// If EFI_DATA_RECORD_HEADER is extended in the future the Version number must
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// change and the HeaderSize will change if the definition of
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// EFI_DATA_RECORD_HEADER is extended.
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//
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// The logger is responcible for initializing:
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// Version, HeaderSize, RecordSize, DataRecordGuid, DataRecordClass
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//
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// The Data Hub driver is responcible for initializing:
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// LogTime and LogMonotonicCount.
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//
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#define EFI_DATA_RECORD_HEADER_VERSION 0x0100
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typedef struct {
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UINT16 Version;
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UINT16 HeaderSize;
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UINT32 RecordSize;
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EFI_GUID DataRecordGuid;
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EFI_GUID ProducerName;
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UINT64 DataRecordClass;
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EFI_TIME LogTime;
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UINT64 LogMonotonicCount;
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} EFI_DATA_RECORD_HEADER;
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//
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// Definition of DataRecordClass. These are used to filter out class types
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// at a very high level. The DataRecordGuid still defines the format of
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// the data. See DateHub.doc for rules on what can and can not be a
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// new DataRecordClass
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//
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#define EFI_DATA_RECORD_CLASS_DEBUG 0x0000000000000001
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#define EFI_DATA_RECORD_CLASS_ERROR 0x0000000000000002
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#define EFI_DATA_RECORD_CLASS_DATA 0x0000000000000004
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#define EFI_DATA_RECORD_CLASS_PROGRESS_CODE 0x0000000000000008
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//
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// Forward reference for pure ANSI compatability
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//
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typedef struct _EFI_DATA_HUB_PROTOCOL EFI_DATA_HUB_PROTOCOL;
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/**
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Logs a data record to the system event log.
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@param This The EFI_DATA_HUB_PROTOCOL instance.
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@param DataRecordGuid A GUID that indicates the format of the data passed into RawData.
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@param ProducerName A GUID that indicates the identity of the caller to this API.
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@param DataRecordClass This class indicates the generic type of the data record.
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@param RawData The DataRecordGuid-defined data to be logged.
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@param RawDataSize The size in bytes of RawData.
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@retval EFI_SUCCESS Data was logged.
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@retval EFI_OUT_OF_RESOURCES Data was not logged due to lack of system resources.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DATA_HUB_LOG_DATA)(
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IN EFI_DATA_HUB_PROTOCOL *This,
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IN EFI_GUID *DataRecordGuid,
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IN EFI_GUID *ProducerName,
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IN UINT64 DataRecordClass,
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IN VOID *RawData,
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IN UINT32 RawDataSize
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);
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/**
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Allows the system data log to be searched.
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@param This The EFI_DATA_HUB_PROTOCOL instance.
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@param MonotonicCount On input, it specifies the Record to return.
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An input of zero means to return the first record.
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@param FilterDriver If FilterDriver is not passed in a MonotonicCount of zero,
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it means to return the first data record. If FilterDriver is passed in,
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then a MonotonicCount of zero means to return the first data not yet read
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by FilterDriver.
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@param Record Returns a dynamically allocated memory buffer with a data
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record that matches MonotonicCount.
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@retval EFI_SUCCESS Data was returned in Record.
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@retval EFI_INVALID_PARAMETER FilterDriver was passed in but does not exist.
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@retval EFI_NOT_FOUND MonotonicCount does not match any data record
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in the system. If a MonotonicCount of zero was passed in, then no
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data records exist in the system.
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@retval EFI_OUT_OF_RESOURCES Record was not returned due to lack
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of system resources.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DATA_HUB_GET_NEXT_RECORD)(
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IN EFI_DATA_HUB_PROTOCOL *This,
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IN OUT UINT64 *MonotonicCount,
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IN EFI_EVENT *FilterDriver OPTIONAL,
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OUT EFI_DATA_RECORD_HEADER **Record
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);
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/**
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Registers an event to be signaled every time a data record is logged in the system.
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@param This The EFI_DATA_HUB_PROTOCOL instance.
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@param FilterEvent The EFI_EVENT to signal whenever data that matches
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FilterClass is logged in the system.
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@param FilterTpl The maximum EFI_TPL at which FilterEvent can be signaled.
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It is strongly recommended that you use the lowest EFI_TPL possible.
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@param FilterClass FilterEvent will be signaled whenever a bit
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in EFI_DATA_RECORD_HEADER.DataRecordClass is also set in FilterClass.
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If FilterClass is zero, no class-based filtering will be performed.
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@param FilterDataRecordGuid FilterEvent will be signaled whenever
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FilterDataRecordGuid matches EFI_DATA_RECORD_HEADER.DataRecordGuid.
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If FilterDataRecordGuid is NULL, then no GUID-based filtering will be performed.
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@retval EFI_SUCCESS The filter driver event was registered
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@retval EFI_ALREADY_STARTED FilterEvent was previously registered and cannot be registered again.
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@retval EFI_OUT_OF_RESOURCES The filter driver event was not registered
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due to lack of system resources.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DATA_HUB_REGISTER_FILTER_DRIVER)(
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IN EFI_DATA_HUB_PROTOCOL *This,
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IN EFI_EVENT FilterEvent,
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IN EFI_TPL FilterTpl,
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IN UINT64 FilterClass,
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IN EFI_GUID *FilterDataRecordGuid OPTIONAL
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);
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/**
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Stops a filter driver from being notified when data records are logged.
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@param This The EFI_DATA_HUB_PROTOCOL instance.
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@param FilterEvent The EFI_EVENT to remove from the list of events to be
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signaled every time errors are logged.
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@retval EFI_SUCCESS The filter driver represented by FilterEvent was shut off.
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@retval EFI_NOT_FOUND FilterEvent did not exist.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_DATA_HUB_UNREGISTER_FILTER_DRIVER)(
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IN EFI_DATA_HUB_PROTOCOL *This,
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IN EFI_EVENT FilterEvent
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);
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/**
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This protocol is used to log information and register filter drivers
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to receive data records.
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**/
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struct _EFI_DATA_HUB_PROTOCOL {
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///
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/// Logs a data record.
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///
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EFI_DATA_HUB_LOG_DATA LogData;
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///
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/// Gets a data record. Used both to view the memory-based log and to
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/// get information about which data records have been consumed by a filter driver.
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///
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EFI_DATA_HUB_GET_NEXT_RECORD GetNextRecord;
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///
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/// Allows the registration of an EFI event to act as a filter driver for all data records that are logged.
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///
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EFI_DATA_HUB_REGISTER_FILTER_DRIVER RegisterFilterDriver;
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///
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/// Used to remove a filter driver that was added with RegisterFilterDriver().
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///
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EFI_DATA_HUB_UNREGISTER_FILTER_DRIVER UnregisterFilterDriver;
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};
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extern EFI_GUID gEfiDataHubProtocolGuid;
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#endif
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